Population change in Maryland by county and region : 1950-1970
Poffenberger, L.L., Longest, J.W.
Population change in Maryland by county and region : 1950-1970 - Maryland 1974 - 21 p. - No. 854; Maryland Agricultural .
Population change in Maryland by county and region : 1950-1970 - Maryland 1974 - 21 p. - No. 854; Maryland Agricultural .